An Optional velcro strap in black or grey was supplied – these straps attached to the 1st male link of your bracelet. Luckily, the fabric strap through the IW3715-36 and also the alternate rubber strap in the IW3548 in good shape the Aquatimer! There's a beautifully exclusive double index at https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/